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No. 752,647. PATENTED FEB; 23, 1904.

J. BOYD.

MECHANISM FOR GUIDING AND APPLYING TENSION T0 SPINDLE DRIVING BANDS.

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No. 752,647. PATENTED FEB. 23, 1904.

J. BOYD. MECHANISM FOR GUIDING AND APPLYING TENSION TO SPINDLE DRIVINGBANDS.

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MECHANISM FOR GUIDING AND APPLYING TENSION T0 SPINDLE DRIVING BANDS.

APPLICATION FILED APR.19, 1902.

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No. 752,647." PATENTED FEB. 23, 1904. J.BOYD.

MEGHANISM FOR GUIDING AND APPLYING TENSION T0 SPINDLE DRIVING BANDS.

APPLICATION IILBD APR. 19, 1902. N0 MODEL. 4 SHEETS-SHEET 4.

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No. 752,647. I

UNITED STATES Patented. February 2'3, 1904.

JOHN BOYD, or BOTPIWELL, SCOTLAND.

MECHANISM FOR GUIDING AND APPLYING TENSION T0 SPlNDLE-DRIVING BANDS.

SPECIFICATION forming part of Letters Patent No. 752,647, dated February23, 1904. Application filed April 19, 1902 Serial No. 103,691. (Nomodel.)

To all whom it may concern.-

Be it known that I, JOHN BOYD, a subject of the King of Great Britainand Ireland, residing in BothWell, county of Lanark, Scotland, haveinvented Improvements in Mechanism for Guiding and Applying Tension toSpindle- Driving Bands of Spinning, Twisting, Winding, and LikeMachines, of which the following is a specification.

This invention comprises improvements designed for spinning, twisting,winding, and similar machines for fibrous materials, and pertainsparticularly to improved devices for guiding and tensioningspindle-driving bands of said machinery when all the spindles in a frameor in sections thereof are driven by one long endless band actuated by adrivingcylinder or its equivalent, whereby a more uniform speed anddriving power are imparted to all the spindles, (or in case ofdead-spindles to tubes or flyers which work thereon,) the Wear and tearof bands are reduced, extra expenditure of power due to overtight bandsis prevented, and a uniform twist is imparted to any fibrous materialwhich may be spun or twisted thereby.

The invention consists, mainly, in the combination with eachspindle-driving band and the driving-cylinder actuating the same, two ormore stationary guide pulleys, and one movable tension-pulley peculiarlymade, ar-

ranged, and carried for the purpose of guid-' ing and tensioning saidbands in an improved manner, the carriage being pulled or strained bythe action of adjustable weights or by an adjustable clock-springdevice.

Figure 1 of the accompanying drawings is a vertical section of so muchof a spinningframe as is necessary to illustrate the application of myinvention to a frame having spindles on both sides of itsdriving-cylinder all driven by one long endless cord band. Fig. 2 is afront elevation, and Fig. 3 is a plan, of the same. Figs. 4 to 11,inclusive, are separate views, on a larger scale, of the main parts ofmy improved spindle-band guiding and tensioning apparatus, as shown inFigs. 1, 2, and 3. Figs. 12 and 13 are a vertical section and a planView of so much of a spinning-frame as is necessary to illustrate theapplication of my invention as applied to a frame having spindles on oneside only of a driving-cylinder all driven by one long endless cordband; and Figs. 14 and 15 are a vertical section and a plan view ofparts of a similar frame, showing my invention as applied to a frame ofthe same kind when all the spindles are driven by one long endless flattape band.

In the construction illustrated in Figs. 1, 2, and 3 I have shown myimproved mechanism as applied to a section of an ordinary spinningframe19,having seven spindles on each side, all driven by one long endlesscord spindledriving band 21, actuated by a central horizontaldriving-cylinder 22, the top of the latter being sufficiently under thelevel of the center of the pulleys of the spindles 20 on each side toprevent the coils of the band passing around the cylinder 22 fromlapping, or in combination with the above and immediately under thedriving-cylinder 22 an auxiliary angled cylinder 23 may be provided foreach band 21, having live-spindles 24L and 25 at each end and stationaryswiveled and angled bearings for the same, so as to guide and keep thecoils of the band 21 well clear of one another, and thus moreefiectually keep them from lapping. The band when the auxiliary cylinder23 is used is passed around both cylinders, as explained in thespecification of United States Patent No. 617,276, of 1899, and shown inFigs. 1, 2, and 3 in drawings of the same; but in this'case theauxiliary cylinder 23 being used only for guiding the band works onstationary bearings. I A longitudinal horizontal bar 26, a main part ofmy improved tension device slightly beveled on its top and under edges(as may be seen best in section in Fig. 1) and extending in one or morelengths the whole length of the frame 19, is fixed in the latter in anyconvenient way and in a suitableplace for the purpose of carryingstationary guide-pulleys 27 and 28 (see Figs. 5 and 6 and Figs. 7 and 8)and a movable tension-pulley 29, provided for each band 21. (See Figs. 9and, 10.) The stationary guide-pulleys 27 and 28 are carried by brackets30 and 31, adj ustablysecured to the bar 26 by projections of thebrackets and by set-screws 32 and 33 or otherwiseand so catching the topand under beveled surfaces of the bar wherever they are fixed. Thetension-pulley 29 is mounted on a sliding or wheeled carriage-bracket34, which when working moves backward and forward along the bar 26 between the stationary guide bracketsin this case against the pull of thespindle-band 21by the action of adjustable weights 35 and 36. Theseweights are suspended to or on a loop of a chain or cord 37 passedaround a top pulley 38 and a pulley 39, carried by one of the fixedguide-pulley brackets 30 or otherwise. The other end of the cord 37 isconnected to the car: riage 34 for the purpose of acting on two or morecoils of the band 21, which is carried around one of the fixed pulleys28 and the tension-pulley 29, and thereby is made capable ofautomatically tensioningand taking up a great amount of slackness in theband 21 with a limited travel'of the carriage 34 and its tensionpulley29. The carriage 34 has an antifrictionroller 34 at its top front end tobear on top of the bar 26 and a tail and projecting part 34 to bear onthe under side of the bar, which also serves to stop its travel in onedirection, as the projecting snug 34 limits its travel in the otherdirection. Both the guide-pulleys 27 and 28 and the tension-pulley 29are made with live footstep-spindles 40, working in oil-cup sockets 41,fixed to or as shown in the drawings, (see Figs. 4 and 11,) forming partof the stationary brackets 30 and 31 and of the carriage-bracket 34.Oiling holes or spouts 42 may also be made in latter for convenience ofoiling the footstep-spindles 40 without entirely withdrawing thespindles. One of the stationary guide-pulleys 27 is made with oneband-groove and is carried in its bracket 30 in a position and at anangle to suit the run of the band 21 as it goes or returns to the bottomof the cylinder 22 or, as shown in the drawings, to the top of theauxiliary cylinder 23 when the latter is used. The other stationaryguide-pulley 28 and the tension-pulley 29 are formed with a propernumber of grooves to suit the number of coils of the band which arerequired to pass round the same, and both these pulleys 28 and 29 arecarried in their brackets 31 and 34 at an angle to suit the run of theband 21 as it goes from or returns to the top of the cylinder 22 or, asshown in drawings, when an auxiliary cylinder 23 is used to the bottomof the driving-cylinder 22.

When banding the spindles 20, beginning at one end and at the top of thecylinder 22, the band 21 is taken alternately round the latter and roundthe auxiliary angled cylinder 23 and round the V-grooved pulley of onespindle 20 on each side till the last two spindles of the section arebanded, it being important that each two spindles, one on each side,should be driven direct from the cylinder 22, after which the band istaken once more round the two cylinders and over the top of theauxiliary cylinder 23 at one end, then round the two stationary pulleys27 and 28 into a different groove each time and with one or more coilstight round latter and the tensionpulley 29 'till it, with its carriage34, is pulled close to the second stationary pulley 28, from which it istaken back round the bottom side and to the starting-point at the top ofthe cylinder 22, when the two ends are fastened together.

The directions of revolution and movements of parts are indicated byarrows. The tension-pulley 29 being pulled away from the secondstationary pulley 28 by the weighted cord 37 and it sadjustable weights35 and 36 thereby very equally tensions and takes up the slack of allthe loops of the spindle-band 21, which pass round the cylinders 22 and23 and spindles 20 on each side, the driving-band giving at the sametime a regular rotary motion to all the spindles it drives.

In the construction illustrated in Figs. 12 and 13 I have shown myimproved mechanism as applied to a section of a spinning-frame 19,having seven spindles 20 on one side only, all driven by one endlessspindle-driving cord band 21, actuated by a horizontal driving-cylinder22. My improved tension device, consisting of the horizontal bar 26, thestationary guide-pulleys 27 and 28, carried in their brackets 30 and 31,the movable tension-pulley 29, carried in its carriage 34, and theweighted cord 37 and its adjustable weights 35 and 36 are all placed ina similar position, as in the first construction, between the spindles20 and the cylinder 22 for the purpose of guiding and tensioning theband, but a little higher, so as to suit the run of the band 21, andfrom the bottom of cylinder 22 at one end and to the top of the latterat the other end. The V-grooved pulleys of spindles 20 are, as in mules,in line or nearly in line with the center of the cylinder 22.

In banding the spindles 20, beginning at the top of the cylinder, theband is taken from the beginning to the end of the section alternatelyround the cylinder and round the successive V-grooved pulleys ofspindles 20 and, lastly, from the under side of the cylinder 22 roundone of the stationary guide-pulleys 27 and once or twice round the otherstationary guide-pulleys 28 and the tension-pulley 29 and back to thestarting-point at the top of the cylinder 22, when the band is tightenedand the two ends fastened together.

In the construction illustrated in Figs. 14 and 15 I have shown myimproved mechanism as applied to a section of a spinning-frame 19 of thesame kind as shown in Figs. 12 and 13, having seven spindles 20 on oneside only, all driven by one long endless and comparatively broad flattape band 21, actuated by a horizontal cylinder 22. My improved tensiondevice is the same in all its parts, except that in this case the guideand tension pulleys 27,28,

and 29 are similar in form, being all made with top and bottom flangesand curved or bellied surfaces like the spindle-pulley 20 commonly usedfor such bands, and an extra and similar stationary guide-pulley 28 isprovided, the socket part of which, 31, is adjustably fixed to thestationary bracket 31 by screws, so as to adjust its angle to the run ofthe tape band 21 as it comes from the top of the cylinder 22, as shownin the drawings. Also in this construction instead of using a weightedcord 37 the weights are dispensed with, and the cord 37 is connected toand receives its necessary pull from the barrel 43 of an adjustableclock-spring device, which is carried on the bar 26 and may be made partof the guide-pulley bracket 30. In many cases this clock-spring deviceis better for acting on the tension-carriage 34 than adjustable weightsshown in the first and second constructions.

Instead of the guide and tension pulley brackets of my improvedmechanism being carried on a longitudinal bar the latter may be in somecases dispensed with, and the guidepulley brackets may be fixed to someconvenient part of the frame and the tension-carriage made to move on alongitudinal rail of the frame or on a longitudinal bracket fixed to thesame.

When very heavy round cord bands are used for driving very largeflier-spindles, grooved pulleys fixed on driving-shafts may be used toadvantage instead of a driving-cylinder.

Flat tape bands,as well as round cord bands, if not too broad, can beused withthe grooved guide and tension pulleys shown in Figs. 1 to 13.

By extending any of the constructions illustrating my improved mechanisma much larger number of spindles can be driven by one belt or band thanit is possible to show in the drawings referring to the same.

Any necessary number of sets of my improved mechanism may be used on oneframe and all carried on the longitudinal bar 26, according to itslength and according to the number and pitch of the spindles in thesame. As a rule one set of my improved mechanism is used to each sectionin the length ofa frame.

In the claims the term band is intended to cover either the cord band orflat band or belt shown in the drawings and hereinbefore described orother suitable form of spindledriving band.

I claim as my invention 1. In spinning, twisting, winding and similarmachines, in combination with a horizontal driving-cylinder, adriving-band, and a number of spindles driven by the band from thecylinder, two or. more guide pulleys having live footstepspindles 40,oil-cup sockets 41 in which these spindles work, stationary brackets 30and 31, of which said sockets form part, the sockets being at angles tosuit the rim of the band as it goes to or returns from thedriving-cylinder, a tension-pulley 29 having alive footstep-spindle 40,and an oil-cup socket 41 in which this last-named spindle works, atension-pulley carriage 34, of which said last-named socket forms part,and the socket being at an angle to suit the run of the driving-band asit passes around said tensionpulley 29, all substantially as described.

2. In spinning, twisting, winding and similar machines, the combinationof a horizontal driving-cylinder, a number of spindles and an endlessband passing around the driving-cylinder and each of the spindles, withtwo stationary brackets 30 and 31, and guide-pulleys therein for theband, one of said brackets carrying more than one pulley, livefootstep-spindles for said guide pulleys, oil cup socket bearings forsaid pulleys at angles to suit the run of the band from and to thedriving-cylinder, and a tension-pulley also having a livefootstep-spindle and an oil-cup-socket bearing for the latter,substantially as described.

3. In spinning, twisting, winding and similar machines, in combinationwith ahorizontal driving-cylinder, a driving-band and a number ofspindles driven by the band from the cylinder, a horizontal bar 26, twoor more stationary guide-pulleys mounted on said bar and having livefootstep-spindles, oil-cup sockets in which these spindles work,stationary brackets 30 and 31 carrying these sockets, a tension-pulley29 having a live footstep-spindle 40, an oil-cup socket 41 for thisspindle, a tension-pulley carriage 34 carrying this lastnamed socket andmounted to traverse upon the bar 26 automatically between theguidepulley brackets, the guide pulleys being adapted to bring theendless band 21 back to the position from which it starts and thetension-pulley having means to tension the hand, all substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN BOYD. Witnesses:

JAMES CUNNINGHAM, ANDREW RANKIN.

